FEDORA-EPEL-2015-bf18ffa52d created by dfateyev 6 years ago for Fedora EPEL 7
obsolete

Several vulnerabilities have been fixed in OpenSMTPD 5.7.2:

  • an oversight in the portable version of fgetln() that allows attackers to read and write out-of-bounds memory;

  • multiple denial-of-service vulnerabilities that allow local users to kill or hang OpenSMTPD;

  • a stack-based buffer overflow that allows local users to crash OpenSMTPD, or execute arbitrary code as the non-chrooted _smtpd user;

  • a hardlink attack (or race-conditioned symlink attack) that allows local users to unset the chflags() of arbitrary files;

  • a hardlink attack that allows local users to read the first line of arbitrary files (for example, root's hash from /etc/master.passwd);

  • a denial-of-service vulnerability that allows remote attackers to fill OpenSMTPD's queue or mailbox hard-disk partition;

  • an out-of-bounds memory read that allows remote attackers to crash OpenSMTPD, or leak information and defeat the ASLR protection;

  • a use-after-free vulnerability that allows remote attackers to crash OpenSMTPD, or execute arbitrary code as the non-chrooted _smtpd user;

Further details can be found in Qualys' audit report: http://seclists.org/oss-sec/2015/q4/17

MITRE has assigned one CVE for the use-after-free vulnerability; additional CVEs may be assigned: http://seclists.org/oss-sec/2015/q4/23

External References:

https://www.opensmtpd.org/announces/release-5.7.2.txt http://seclists.org/oss-sec/2015/q4/17

This update has been submitted for testing by dfateyev.

6 years ago

This update has been pushed to testing.

6 years ago

dfateyev edited this update.

6 years ago

This update has been obsoleted by opensmtpd-5.7.3p1-1.el7.

6 years ago

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Metadata
Type
security
Severity
medium
Karma
0
Signed
Content Type
RPM
Test Gating
Settings
Unstable by Karma
-3
Stable by Karma
1
Stable by Time
disabled
Dates
submitted
6 years ago
in testing
6 years ago
modified
6 years ago
BZ#1268509 opensmtpd: 5.7.2 release available
0
0
BZ#1268795 CVE-2015-7687 OpenSMTPD: multiple vulnerabilities fixed in 5.7.2 [epel-all]
0
0

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